./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 449370313253a0d5d7b509b2cd15e912fe8e85dcb7140575e7078385cf7fc6cf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:41:09,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:09,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:09,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:09,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:09,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:09,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:09,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:09,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:09,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:09,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:09,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:09,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:09,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:09,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:09,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:09,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:09,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:09,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:09,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:09,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:09,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:09,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:09,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:09,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:09,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:09,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:09,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:09,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:09,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:09,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:09,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:09,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:09,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:09,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:09,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:09,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:09,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:09,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:09,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:09,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:09,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 20:41:09,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:09,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:09,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:09,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:09,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:09,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:09,485 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:09,485 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:41:09,485 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:41:09,485 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:41:09,486 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:41:09,486 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:41:09,487 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:41:09,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:09,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:09,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:41:09,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:41:09,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:09,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:09,490 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:41:09,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:09,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:41:09,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:09,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:09,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:09,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:09,493 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:41:09,493 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 449370313253a0d5d7b509b2cd15e912fe8e85dcb7140575e7078385cf7fc6cf [2022-11-02 20:41:09,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:09,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:09,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:09,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:09,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:09,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2022-11-02 20:41:09,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/data/47ecaebc7/7ea1323496b24c5aadfa803454645d79/FLAG68d943138 [2022-11-02 20:41:10,477 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:10,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c [2022-11-02 20:41:10,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/data/47ecaebc7/7ea1323496b24c5aadfa803454645d79/FLAG68d943138 [2022-11-02 20:41:10,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/data/47ecaebc7/7ea1323496b24c5aadfa803454645d79 [2022-11-02 20:41:10,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:10,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:10,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:10,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:10,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:10,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e7452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10, skipping insertion in model container [2022-11-02 20:41:10,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:10,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:11,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c[7477,7490] [2022-11-02 20:41:11,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:11,328 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:11,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/sv-benchmarks/c/product-lines/minepump_spec3_product42.cil.c[7477,7490] [2022-11-02 20:41:11,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:11,466 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:11,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11 WrapperNode [2022-11-02 20:41:11,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:11,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:11,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:11,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:11,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,557 INFO L138 Inliner]: procedures = 54, calls = 153, calls flagged for inlining = 50, calls inlined = 60, statements flattened = 488 [2022-11-02 20:41:11,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:11,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:11,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:11,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:11,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:11,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:11,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:11,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:11,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (1/1) ... [2022-11-02 20:41:11,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:41:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:11,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:11,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:11,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:11,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:11,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:11,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:11,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:11,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:12,333 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:12,340 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:12,341 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:41:12,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:12 BoogieIcfgContainer [2022-11-02 20:41:12,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:12,344 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:41:12,344 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:41:12,353 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:41:12,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:41:12,354 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:41:10" (1/3) ... [2022-11-02 20:41:12,355 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32864fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:41:12, skipping insertion in model container [2022-11-02 20:41:12,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:41:12,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:11" (2/3) ... [2022-11-02 20:41:12,356 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32864fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:41:12, skipping insertion in model container [2022-11-02 20:41:12,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:41:12,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:12" (3/3) ... [2022-11-02 20:41:12,358 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2022-11-02 20:41:12,416 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:41:12,416 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:41:12,416 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:41:12,416 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:41:12,416 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:41:12,417 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:41:12,417 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:41:12,417 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:41:12,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 124 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 123 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2022-11-02 20:41:12,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:41:12,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:41:12,455 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:12,456 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:12,456 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:41:12,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 124 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 123 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2022-11-02 20:41:12,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:41:12,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:41:12,464 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:12,464 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:12,471 INFO L748 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 43#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 83#L534true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 90#L527true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 8#L542true main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 57#L140true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 106#L113true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_#t~nondet8#1, test_~splverifierCounter~0#1, test_~tmp~1#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~1#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 26#L165-2true [2022-11-02 20:41:12,472 INFO L750 eck$LassoCheckResult]: Loop: 26#L165-2true assume !false; 87#L166true assume test_~splverifierCounter~0#1 < 4; 22#L167true test_~tmp~1#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 3#L175true assume !(0 != test_~tmp~1#1); 70#L175-2true test_~tmp___0~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 94#L185true assume !(0 != test_~tmp___0~0#1); 50#L185-2true test_~tmp___2~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 104#L195true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet8#1;havoc test_#t~nondet8#1; 27#L203true assume 0 != test_~tmp___1~0#1; 68#L203-2true assume { :begin_inline_timeShift } true; 98#L237true assume !(0 != ~pumpRunning~0); 46#L237-2true assume !(0 != ~systemActive~0); 29#L244-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_~tmp~8#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~8#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 40#L452-1true __utac_acc__Specification3_spec__1_#t~ret50#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~8#1 := __utac_acc__Specification3_spec__1_#t~ret50#1;havoc __utac_acc__Specification3_spec__1_#t~ret50#1; 113#L922true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8#1; 102#L928-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 56#L254true assume { :end_inline_timeShift } true; 26#L165-2true [2022-11-02 20:41:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-11-02 20:41:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:12,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755119381] [2022-11-02 20:41:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:12,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:12,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash 416742932, now seen corresponding path program 1 times [2022-11-02 20:41:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:12,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551744789] [2022-11-02 20:41:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:12,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:12,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash -514938672, now seen corresponding path program 1 times [2022-11-02 20:41:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681895713] [2022-11-02 20:41:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:13,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681895713] [2022-11-02 20:41:13,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681895713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:13,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:13,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405665363] [2022-11-02 20:41:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:13,197 INFO L87 Difference]: Start difference. First operand has 124 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 123 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:13,324 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-11-02 20:41:13,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 155 transitions. [2022-11-02 20:41:13,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2022-11-02 20:41:13,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 111 states and 145 transitions. [2022-11-02 20:41:13,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2022-11-02 20:41:13,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 111 [2022-11-02 20:41:13,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 145 transitions. [2022-11-02 20:41:13,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:13,347 INFO L218 hiAutomatonCegarLoop]: Abstraction has 111 states and 145 transitions. [2022-11-02 20:41:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 145 transitions. [2022-11-02 20:41:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-02 20:41:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 110 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2022-11-02 20:41:13,379 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 145 transitions. [2022-11-02 20:41:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:13,384 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 145 transitions. [2022-11-02 20:41:13,384 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:41:13,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 145 transitions. [2022-11-02 20:41:13,386 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2022-11-02 20:41:13,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:41:13,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:41:13,387 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:13,387 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:13,388 INFO L748 eck$LassoCheckResult]: Stem: 371#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 322#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 323#L534 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 361#L527 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 275#L542 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 276#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 336#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_#t~nondet8#1, test_~splverifierCounter~0#1, test_~tmp~1#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~1#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 306#L165-2 [2022-11-02 20:41:13,388 INFO L750 eck$LassoCheckResult]: Loop: 306#L165-2 assume !false; 307#L166 assume test_~splverifierCounter~0#1 < 4; 303#L167 test_~tmp~1#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 263#L175 assume !(0 != test_~tmp~1#1); 265#L175-2 test_~tmp___0~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 353#L185 assume !(0 != test_~tmp___0~0#1); 330#L185-2 test_~tmp___2~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 331#L195 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 369#L404 assume { :end_inline_startSystem } true; 309#L203-2 assume { :begin_inline_timeShift } true; 352#L237 assume !(0 != ~pumpRunning~0); 269#L237-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 324#L269 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 344#L261-1 assume { :end_inline_processEnvironment__wrappee__base } true; 329#L269-1 assume { :end_inline_processEnvironment } true; 311#L244-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_~tmp~8#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~8#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 312#L452-1 __utac_acc__Specification3_spec__1_#t~ret50#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~8#1 := __utac_acc__Specification3_spec__1_#t~ret50#1;havoc __utac_acc__Specification3_spec__1_#t~ret50#1; 319#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8#1; 347#L928-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 335#L254 assume { :end_inline_timeShift } true; 306#L165-2 [2022-11-02 20:41:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-11-02 20:41:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392021459] [2022-11-02 20:41:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 956659802, now seen corresponding path program 1 times [2022-11-02 20:41:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206427370] [2022-11-02 20:41:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:13,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206427370] [2022-11-02 20:41:13,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206427370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:13,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:13,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448312820] [2022-11-02 20:41:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:13,440 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:41:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:13,442 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:13,493 INFO L93 Difference]: Finished difference Result 173 states and 220 transitions. [2022-11-02 20:41:13,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 220 transitions. [2022-11-02 20:41:13,496 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2022-11-02 20:41:13,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 220 transitions. [2022-11-02 20:41:13,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2022-11-02 20:41:13,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2022-11-02 20:41:13,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 220 transitions. [2022-11-02 20:41:13,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:13,500 INFO L218 hiAutomatonCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-02 20:41:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 220 transitions. [2022-11-02 20:41:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-02 20:41:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.2716763005780347) internal successors, (220), 172 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-11-02 20:41:13,511 INFO L240 hiAutomatonCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-02 20:41:13,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:13,512 INFO L428 stractBuchiCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-02 20:41:13,512 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:41:13,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 220 transitions. [2022-11-02 20:41:13,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2022-11-02 20:41:13,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:41:13,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:41:13,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:13,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:13,529 INFO L748 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 613#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 614#L534 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 657#L527 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 564#L542 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 565#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 630#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_#t~nondet8#1, test_~splverifierCounter~0#1, test_~tmp~1#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~1#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 596#L165-2 [2022-11-02 20:41:13,530 INFO L750 eck$LassoCheckResult]: Loop: 596#L165-2 assume !false; 597#L166 assume test_~splverifierCounter~0#1 < 4; 593#L167 test_~tmp~1#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 553#L175 assume !(0 != test_~tmp~1#1); 555#L175-2 test_~tmp___0~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 646#L185 assume !(0 != test_~tmp___0~0#1); 623#L185-2 test_~tmp___2~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 624#L195 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet8#1;havoc test_#t~nondet8#1; 598#L203 assume 0 != test_~tmp___1~0#1; 599#L203-2 assume { :begin_inline_timeShift } true; 645#L237 assume !(0 != ~pumpRunning~0); 615#L237-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 616#L269 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~3#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~3#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 638#L492 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 672#L497 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 585#L389 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 586#L389-2 isHighWaterLevel_~retValue_acc~3#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~3#1; 609#L395 processEnvironment_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~2#1 := processEnvironment_#t~ret9#1;havoc processEnvironment_#t~ret9#1; 634#L273 assume !(0 != processEnvironment_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 636#L261 assume { :end_inline_processEnvironment__wrappee__base } true; 622#L269-1 assume { :end_inline_processEnvironment } true; 601#L244-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_~tmp~8#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~8#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 602#L452-1 __utac_acc__Specification3_spec__1_#t~ret50#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~8#1 := __utac_acc__Specification3_spec__1_#t~ret50#1;havoc __utac_acc__Specification3_spec__1_#t~ret50#1; 610#L922 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8#1; 640#L928-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 629#L254 assume { :end_inline_timeShift } true; 596#L165-2 [2022-11-02 20:41:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-11-02 20:41:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630513583] [2022-11-02 20:41:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 247239105, now seen corresponding path program 1 times [2022-11-02 20:41:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356704064] [2022-11-02 20:41:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:13,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:13,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 120797829, now seen corresponding path program 1 times [2022-11-02 20:41:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227248349] [2022-11-02 20:41:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:13,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227248349] [2022-11-02 20:41:13,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227248349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:13,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:13,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:41:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767800114] [2022-11-02 20:41:13,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:14,026 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:14,230 INFO L93 Difference]: Finished difference Result 605 states and 765 transitions. [2022-11-02 20:41:14,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 605 states and 765 transitions. [2022-11-02 20:41:14,237 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 446 [2022-11-02 20:41:14,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 605 states to 605 states and 765 transitions. [2022-11-02 20:41:14,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 605 [2022-11-02 20:41:14,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 605 [2022-11-02 20:41:14,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 605 states and 765 transitions. [2022-11-02 20:41:14,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:14,254 INFO L218 hiAutomatonCegarLoop]: Abstraction has 605 states and 765 transitions. [2022-11-02 20:41:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states and 765 transitions. [2022-11-02 20:41:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 339. [2022-11-02 20:41:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 339 states have (on average 1.2536873156342183) internal successors, (425), 338 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 425 transitions. [2022-11-02 20:41:14,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 339 states and 425 transitions. [2022-11-02 20:41:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:41:14,290 INFO L428 stractBuchiCegarLoop]: Abstraction has 339 states and 425 transitions. [2022-11-02 20:41:14,290 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:41:14,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 339 states and 425 transitions. [2022-11-02 20:41:14,294 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2022-11-02 20:41:14,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:41:14,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:41:14,296 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:14,297 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:14,297 INFO L748 eck$LassoCheckResult]: Stem: 1477#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1410#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1411#L534 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1457#L527 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 1362#L542 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 1363#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1427#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_#t~nondet8#1, test_~splverifierCounter~0#1, test_~tmp~1#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~1#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1474#L165-2 [2022-11-02 20:41:14,297 INFO L750 eck$LassoCheckResult]: Loop: 1474#L165-2 assume !false; 1660#L166 assume test_~splverifierCounter~0#1 < 4; 1661#L167 test_~tmp~1#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 1686#L175 assume !(0 != test_~tmp~1#1); 1444#L175-2 test_~tmp___0~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 1445#L185 assume !(0 != test_~tmp___0~0#1); 1420#L185-2 test_~tmp___2~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 1421#L195 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1472#L404 assume { :end_inline_startSystem } true; 1395#L203-2 assume { :begin_inline_timeShift } true; 1443#L237 assume !(0 != ~pumpRunning~0); 1412#L237-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 1413#L269 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~3#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~3#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1436#L492 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1476#L497 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 1381#L389 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1382#L389-2 isHighWaterLevel_~retValue_acc~3#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~3#1; 1405#L395 processEnvironment_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~2#1 := processEnvironment_#t~ret9#1;havoc processEnvironment_#t~ret9#1; 1432#L273 assume !(0 != processEnvironment_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1434#L261 assume { :end_inline_processEnvironment__wrappee__base } true; 1419#L269-1 assume { :end_inline_processEnvironment } true; 1398#L244-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret50#1, __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_~tmp~8#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~8#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 1399#L452-1 __utac_acc__Specification3_spec__1_#t~ret50#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~8#1 := __utac_acc__Specification3_spec__1_#t~ret50#1;havoc __utac_acc__Specification3_spec__1_#t~ret50#1; 1478#L922 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~5#1;havoc getWaterLevel_~retValue_acc~5#1;getWaterLevel_~retValue_acc~5#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~5#1; 1479#L484 __utac_acc__Specification3_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~2#1 := __utac_acc__Specification3_spec__1_#t~ret51#1;havoc __utac_acc__Specification3_spec__1_#t~ret51#1; 1480#L928 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2#1); 1663#L928-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1662#L254 assume { :end_inline_timeShift } true; 1474#L165-2 [2022-11-02 20:41:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2022-11-02 20:41:14,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632612398] [2022-11-02 20:41:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1721419275, now seen corresponding path program 1 times [2022-11-02 20:41:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10699233] [2022-11-02 20:41:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1322566073, now seen corresponding path program 1 times [2022-11-02 20:41:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226289869] [2022-11-02 20:41:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:14,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:41:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:18,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:41:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:41:18,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:41:18 BoogieIcfgContainer [2022-11-02 20:41:18,438 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:41:18,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:41:18,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:41:18,439 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:41:18,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:12" (3/4) ... [2022-11-02 20:41:18,442 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:41:18,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:41:18,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:41:18,512 INFO L158 Benchmark]: Toolchain (without parser) took 7730.95ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 77.3MB in the beginning and 138.2MB in the end (delta: -60.9MB). Peak memory consumption was 90.3MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,513 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:41:18,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.31ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 77.8MB in the end (delta: -768.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.12ms. Allocated memory is still 111.1MB. Free memory was 77.8MB in the beginning and 75.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,514 INFO L158 Benchmark]: Boogie Preprocessor took 61.24ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,514 INFO L158 Benchmark]: RCFGBuilder took 722.82ms. Allocated memory is still 111.1MB. Free memory was 72.6MB in the beginning and 81.4MB in the end (delta: -8.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,515 INFO L158 Benchmark]: BuchiAutomizer took 6093.90ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 80.9MB in the beginning and 44.9MB in the end (delta: 36.0MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,515 INFO L158 Benchmark]: Witness Printer took 73.27ms. Allocated memory is still 167.8MB. Free memory was 43.9MB in the beginning and 138.2MB in the end (delta: -94.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.31ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 77.8MB in the end (delta: -768.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.12ms. Allocated memory is still 111.1MB. Free memory was 77.8MB in the beginning and 75.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.24ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 722.82ms. Allocated memory is still 111.1MB. Free memory was 72.6MB in the beginning and 81.4MB in the end (delta: -8.8MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 6093.90ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 80.9MB in the beginning and 44.9MB in the end (delta: 36.0MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. * Witness Printer took 73.27ms. Allocated memory is still 167.8MB. Free memory was 43.9MB in the beginning and 138.2MB in the end (delta: -94.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 339 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 5.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 266 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1228 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1228 mSDsluCounter, 1242 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 739 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 503 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 165]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L409] int waterLevel = 1; [L410] int methaneLevelCritical = 0; [L716] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L197] CALL startSystem() [L403] systemActive = 1 [L197] RET startSystem() [L210] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L381] int retValue_acc ; [L382] int tmp ; [L383] int tmp___0 ; [L387] CALL, EXPR isHighWaterSensorDry() [L489] int retValue_acc ; [L492] COND TRUE waterLevel < 2 [L493] retValue_acc = 1 [L494] return (retValue_acc); [L387] RET, EXPR isHighWaterSensorDry() [L387] tmp = isHighWaterSensorDry() [L389] COND TRUE \read(tmp) [L390] tmp___0 = 0 [L394] retValue_acc = tmp___0 [L395] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND FALSE !(\read(tmp)) [L279] FCALL processEnvironment__wrappee__base() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification3_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L916] int tmp___1 ; [L920] CALL, EXPR isMethaneLevelCritical() [L448] int retValue_acc ; [L451] retValue_acc = methaneLevelCritical [L452] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND FALSE !(\read(tmp)) [L926] CALL, EXPR getWaterLevel() [L480] int retValue_acc ; [L483] retValue_acc = waterLevel [L484] return (retValue_acc); [L926] RET, EXPR getWaterLevel() [L926] tmp___0 = getWaterLevel() [L928] COND FALSE !(tmp___0 == 2) [L252] RET __utac_acc__Specification3_spec__1() [L210] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 165]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L409] int waterLevel = 1; [L410] int methaneLevelCritical = 0; [L716] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L197] CALL startSystem() [L403] systemActive = 1 [L197] RET startSystem() [L210] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L381] int retValue_acc ; [L382] int tmp ; [L383] int tmp___0 ; [L387] CALL, EXPR isHighWaterSensorDry() [L489] int retValue_acc ; [L492] COND TRUE waterLevel < 2 [L493] retValue_acc = 1 [L494] return (retValue_acc); [L387] RET, EXPR isHighWaterSensorDry() [L387] tmp = isHighWaterSensorDry() [L389] COND TRUE \read(tmp) [L390] tmp___0 = 0 [L394] retValue_acc = tmp___0 [L395] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND FALSE !(\read(tmp)) [L279] FCALL processEnvironment__wrappee__base() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification3_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L916] int tmp___1 ; [L920] CALL, EXPR isMethaneLevelCritical() [L448] int retValue_acc ; [L451] retValue_acc = methaneLevelCritical [L452] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND FALSE !(\read(tmp)) [L926] CALL, EXPR getWaterLevel() [L480] int retValue_acc ; [L483] retValue_acc = waterLevel [L484] return (retValue_acc); [L926] RET, EXPR getWaterLevel() [L926] tmp___0 = getWaterLevel() [L928] COND FALSE !(tmp___0 == 2) [L252] RET __utac_acc__Specification3_spec__1() [L210] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:41:18,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6ffcab1-074d-4a7f-80a2-985f300d2c67/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)